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An energetic formulation of a gradient damage model for concrete and its numerical implementation
(Pergamon-Elsevier Science Ltd, 2018-12)
The energetic formulation of a rate-independent system assumes that the evolution of the system is driven by two scalar-valued functions: the storage energy functional and the dissipation pseudo-potential. The evolution ...
Fourth-order method for solving the Navier-Stokes equations in a constricting channel
(1997-11-30)
A fourth-order numerical method for solving the Navier-Stokes equations in streamfunction/vorticity formulation on a two-dimensional non-uniform orthogonal grid has been tested on the fluid flow in a constricted symmetric ...
Efficient reduction in the annual investment costs in ac distribution networks via optimal integration of solar pv sources using the newton metaheuristic algorithm
(Cartagena de Indias, 2021-12-05)
This research addresses the problem of the optimal placement and sizing of (PV) sources
in medium voltage distribution grids through the application of the recently developed Newtonmetaheuristic optimization algorithm ...
Determinación del estado estacionario periódico de sistemas eléctricos no-lineales mediante un método Newton basado en la matriz exponencial discreta, incorporando técnicas de dispersidad y procesamiento en paralelo
(Universidad Michoacana de San Nicolás de Hidalgo, 2011-02)
This thesis describes the application of sparsity techniques and parallel processing to the Newton technique based on the Discrete Exponential Matrix, which allows to accelerate the convergence of the state variables to ...
Utilização de filtragem espacial e otimização numérica em um método de estimação de direção de chegada em arranjos de sensoresUse of spatial filtering and numerical optimization in a method of arriving direction estimation in sensor arrays
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Engenharia Elétrica, 2018)
Optimal control for a discrete time influenza model
(Springer, 2014)
We formulated a discrete time model in order to study optimal control strategies for a single influenza outbreak. In our model, we divided the population into four classes: susceptible, infectious, treated, and recovered ...
Markovian traffic equilibrium
(2008)
We analyze an equilibrium model for traffic networks based on stochastic dynamic programming. In this model passengers move towards their destinations by a sequential process of arc selection based on a discrete choice ...
Desarrollo de herramientas computacionales para el control de procesos en la obtención de hierro dúctil austemperado
(2021-12-06)
El austemperado es un tratamiento térmico que produce una mejora sustancial de las propiedades mecánicas de una pieza de hierro dúctil. La microestructura final obtenida en el seno de la pieza luego del proceso de austemperado ...
A fixed-mesh Eulerian-Lagrangian approach for stress analysis in continuous casting
(John Wiley & Sons Ltd, 2007-12)
We present a method for the analysis of the strains and stresses developed in the solidified portion of a metal strand during the continuous casting process. Steady-state conditions are assumed. The solidified metal is ...